= Agenda/Minutes of the VIS Meeting on 2019/11/29 =
2019/11/29 14:00 -

[[https://zoom.us/j/203743987|Zoom Meeting]]

Participants: Takahashi, Aso, Lucia, Fabian, Okutomi, Sato, Ishizaki, Shoda, Tanaka

[[https://paper.dropbox.com/doc/VIS-Commissioning-Task-List--AlK26n6oP8QHU_XUQriwv2PvAg-RKcNXfMFrqOtTAPU48qQf|VIS Commissioning Task List]]

[[https://onedrive.live.com/view.aspx?resid=8E8081C20FE5EC3A!2278&ithint=file,xlsx&authkey=!AMFNtNa-Y6CVp94|Post-O3 task list]] [[https://www.dropbox.com/s/9l1h0fw9kc1pzmm/Proocurement%202019FY.xlsx?dl=0|Procurement list in 2019FY]]

== Progress report ==
=== Type-A ===
==== Past week report ====
 * Sato-san started the design of limit switch for FR.
 * ETMX GAS control saturation problem ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11831|klog#11831]])
  * F0 and F1 GAS control got saturated.
  * The height of BF has changed by +50 um in this 1 week.
   * For a temporary workaround, I put setpoint values of the GAS DC control to avoid the saturation. ---> The BF height has lifted more up: +50 um -> + 105 um.
  * Control output offloading is needed with fishing rods. ---> To be arranged in a few days

==== Plan for coming weeks ====
=== Type B ===
==== Past week report ====
 * I modified the real-time model in order to accomodate bandpass fillters and new DAQ channels. See  [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/http://klog.icrr.u-tokyo.ac.jp/osl/?r=11788|11788]].
  * For the most part I used the same scheme as Type A.
  * As agreed in the previous meeting I added a matrix ramp switch in order to transit from velocity damping to bandpass filters.
  * The medm screen was modified accordingly.
  * I  realized yesterday I hadn't added a monitor for the output of the new  filters banks in the EUL basis. It's been added to the real-time model,  it compiles but still has to be installed.
  * Real-time models for SR suspensionsmust be compiled and installed.
 * Together with Terrence I modified vistools in order to generate functions to manipulate added filter banks. See [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11788|11788]].
  * The  future of vistools looks quite gray (the code is complicated, not  commented and we don't know how to manipulate matrix switches). Some additions  will likely be in regular Guardian.
  * I began adding code for the OBSERVATION state in a draft file.
 * There was an agreement with Okutomi-san to change Type B medm screens for something more illustrative of the signal paths.
 * The  temperature in the BS area has increased. It's been lately between 23.7  and 23.8 degrees. The actuation on the top filter used to be -23,000  counts and is now -13,500 counts.

 * Yamada-kun and Yokozawa-san measured transfer functions from BS to DARM and calculated the noise contribution. See [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11676|11676]], [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11724|11724]], [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11707|11707]].
  * The results are affected by an error in the calibration and are yet to be corrected.
  * The  contributions of TM_DAMP_L and TM_DAMP_Y were considered to be high.  These filters are supposed to be off in OBSERVATION state. See this [[http://klog.icrr.u-tokyo.ac.jp/osl/uploads/11748_20191125213530_bstodarmbeforeimyrolloff.png|plot]].
  * These filters were rolled-off and the a new estimation was calculated. See this other [[http://klog.icrr.u-tokyo.ac.jp/osl/uploads/11748_20191125213851_bstodarmafterimyrolloff.png|plot]].
  * The roll-off of TM_DAMP_Y was conservative.
 * Ushiba-san turned off BS TM-L DAMP filter for the FPMI state ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=11783|11783]]). It may have been affecting the sensitivity.
 * For  the purposes of ASC the diagonalization of the TM actuation with  respect to the oplev was removed by commissioners and replaced by their  own coil balancing and drivealign diagonalization. I couldn't find a  klog for this
 * Hirata-san disassembled the mirror hanging jig and transported it to Mitaka.

==== Plan for coming weeks ====
 * Compile and install SR real-time models.
 * People  have begun to modify or turn off filters which are supposed to be off  in OBSEVATION state, maybe I should aim to design the bandpass filters  and then implement the Guardian OBSERVATION state.

=== Type-Bp ===
==== Past week report ====
==== Plan for coming weeks ====
=== OMMT & OSTM ===
==== Past week report ====
 * Transported the OSTM mirror.

==== Plan for coming weeks ====
 * Installation of the OSTM suspension (12/9-12).

=== VIS electronics ===
==== Past week report ====
==== Plan for coming weeks ====
=== Other site works ===
=== Safety ===
 * Incidents:

== Discussion ==
 * [[https://www.dropbox.com/s/e0inlp006spuj4m/Schedule%20after%20O3.pdf?dl=0|Schedule afetr O3]]

== Travel Plans ==
 * Travel (Week of 12/2):
  * Takahashi:
  * Sato: 3-4(ICRR Kashiwa)
  * Hirata:
  * Shoda:
  * Fujii:
  * Tanaka:

 * Travel (Week of 12/9):
  * Takahashi: 9-12
  * Sato: 9-12
  * Hirata:
  * Shoda:
  * Fujii:
  * Tanaka:

== Next meeting ==
On 2019/12/6(Fri)